The ALTA SKY 62 is the ultimate gear-carrying and working backpack - Specifically designed to carry a super-telephoto lens up to 200-600mm f5.6-6.3, attached to a DSLR or full-frame mirrorless body, along with up to 7 additional lenses (or personal gear), and a 16" laptop with an 11" tablet.

for details, specs & description on manufacturers site.